Rule 3Senate Rules on Impeachment Trials, Rule III

Before proceeding to the consideration of the articles of impeachment, the Presiding Officer shall administer the prescribed oath or affirmation to the Members of the Senate then present and to the other Members of the Senate as they shall appear, whose duty it shall be to take the same. Upon presentation of the articles to the Senate, the Senate shall specify the date and time for the consideration of such articles. Unless the Senate provides otherwise, it shall continue in session from day to day (except Saturdays, Sundays, and nonworking holidays) until final judgment shall be rendered, and so much longer as may, in its judgment, be necessary. Senators shall observe political neutrality during the course of the impeachment trial.

"Political neutrality" shall be defined as exercise of public official's duty without unfair discrimination and regardless of party affiliation or preference.